Question

when the number of students of a school was increased by 30%it became 455.find the previous number of students​

Answer 1

The previous number of students are 350.

Explanation:

Let the number of students be 100x.

`(100+30)/(100)`x = 455

Simplify.

`(130)/(100)`x = 455

Find x.

`(100)/(100)`x =
`(100)/(130)` × 455

Simplify.

x = 350